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Questions tagged [uuid]

A Universally Unique Identifier is a device-identifying string that is 128 bits long.

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How to modify the macOS 14 volume UUID?

The image below is from version 10.12 of macOS, where the volume is in JHFS+ format. This same UUID can be obtained by entering commands in a Terminal application window, as shown below. $ diskutil ...
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How can I find out what a device is by its UUID?

I've been having trouble with my Time Machine lately and I'm trying to figure out what the culprit is by examining the log. I've seen numerous "yellow warning" messages like this: failed to ...
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10 votes
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/dev/disk/by-id on macOS?

Suppose that we are doing some operations on drives using for example diskutil. Usually we use /dev/diskX to indicate which drive we are working on, but the number X could change next time we connect ...
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1 vote
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How to identify a bluetooth device?

I am having kernel—task taking up to 1000% of my CPU, starting the fan and making the iMac unresponsive. (Catalina 10.15.7) In trying to identify the cause I looked in the logs where I have 2 or 3 ...
Hugues's user avatar
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11 votes
1 answer
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How can I query the hardware UUID of a Mac programmatically from a command line?

The hardware universally unique identifier (UUID) can often be used by developers to associate information unique to a Mac. This identifier will usually persist through OS upgrades or reinstalls, as ...
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1 vote
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How to delete all partitions from iMac without an OS installed and rebuild a fusion drive without UUID

a friend of mine bought a second hand iMac and they erased sort of everything from the iMac before it was given to him. There is no OS installed and it's not possible to instal a new version from OSX ...
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3 votes
1 answer
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How do I print my logical volume group UUID to file?

I'm in the process of trying to automate getting the LVGUUID and printing it as a string to a text file, or better piping it in terminal to other commands. All I can do right now is diskutil ...
Christian's user avatar
1 vote
1 answer
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Restore Permissions to external HDD

To read/write NTFS (Windows-formatted) external HDDs on my Mac, I have installed FUSE for OS X (version 3.2.0) and NTFS-3G (version 2015.3.14, installed with homebrew and the instructions from NTFS-3G)...
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4 votes
4 answers
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How can I change an NTFS Volume UUID?

I just upgraded my Mac to Mac OS X El Capitan and I wanted to update my Windows 7 to Windows 10. But, before that, I need to make a backup of my Windows partition. As I've done it before, I have a ...
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1 answer
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ITunes backups - how's the UID generated?

I'm struggling with an issue with an encrypted backup (see Apple Backup encrypted format specs? I need to decrypt part of a backup (for which I have the key) that iTunes won't restore and How to ...
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2 votes
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Can one iPhone be registered to multiple Developer accounts?

I have an Apple iOS Developer account and I registered my iPhones UUID to this account (to create Provisioning Profiles, etc.). Is it possible to add this iPhones UUID to another iOS Developer ...
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5 votes
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MacBook Air serial number

I am seeking to find a Macbook Air serial number from within the backup files created by the Mountain Lion operating system and stored on an external hard drive. Exactly which file do I need to be ...
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1 answer
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Is the UUID command missing in 10.8.2?

I just noticed that the uuid command is no longer working on my MacBook. One possibility is that it was removed when I upgraded to Mountain Lion. The man page is still available. man uuid Does ...
Alex's user avatar
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1 vote
2 answers
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How to get UUID with Python?

System Report will display the system's Hardware UUID in the format 01234567-89ab-cdef-0123-456789abcdef. Using the shell we can retrieve the same UUID: ioreg -rd1 -c IOPlatformExpertDevice | grep -...
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